In the past, some of you may have noticed an admin option to enable a preview of “Google+ premium features.” Today we’re rolling out these premium features to everybody. It won’t change the way you’ve previously interacted with Google+ or Hangouts, but it will let you access several great business-specific features you may have missed out on before now.
These changes will let organizations do two things: first, you’ll have a more tailored Google+ experience with enhanced control options, like making Google+ posts restricted to your domain by default or the ability to hide employee profiles in external searches. Second, you can save time and money while meeting face-to-face with colleagues using 15-person HD video calls with Google Hangouts. So the next time you need to quickly chat with a colleague or hash out a decision, you can just jump into a Hangout with one click from Calendar or an email invitation.
All new Google Apps customers will see these updates from the moment they register, and current users will see these great updates in the next month.
Google Enterprise Blog: http://googleenterprise.blogspot.com/2014/06/the-best-of-google-for-our-apps.html